Table 1.

The 2016 revised ACR criteria for the diagnosis of GCA ${}^a$

Score	Entry
N/A	Age at onset $\ge$ 50 years
	Absence of exclusion criteria ${}^b$
Domain I
1	New-onset localized headache, ${}^c$ 1 point (p)
1	Sudden onset of visual disturbance, ${}^c$ 1 point
2	Polymyalgia rheumatica, 2 points
1	Jaw claudication, ${}^c$ 1 point
2	Abnormal temporal artery, ${}^d$ up to 2 points
Domain II
1	Unexplained fever and/or anemia, 1 point
1	ESR $\ge$ 50 mm/hour, ${}^e$ 1 point
2	Compatible pathology, ${}^f$ up to 2 points
ACR, American College of Rheumatology; ESR, erythrocyte sedimentation rate; GCA, giant cell arteritis; N/A, not applicable ${}^a$ In the presence of three points or more out of the eleven with at least one point belonging to domain I along with all entry criteria, a diagnosis of GCA can be established. ${}^b$ The exclusion criteria included ear, nose, and throat or/and eye inflammation; kidney, skin, or peripheral nervous system involvement; lung infiltration; lymphadenopathies; stiff neck; and digital gangrene or ulceration. ${}^c$ No other etiologies can better explain any one of the criteria. ${}^d$ Enlarged and/or pulseless temporal artery (one point)/tender temporal artery (one point). ${}^e$ It must be ignored in the presence of polymyalgia rheumatica. ${}^f$ Vascular and/or perivascular fibrinoid necrosis along with leucocyte infiltration (one point) and granuloma (one point).